We do not know if your iPhone 4′s battery life will genuinely be doubled by the Exolife battery case, but a minimum of we know that the case is slim, light, and will give your gadget a bit of the power boost.
The case weighs a sensible 59 grams including the rechargeable Lithium polymer battery. It carries a polycarbonate frame and an Illuminated power meter. It’ll operate you about $90 and ought to be obtainable in the end of the month.
